28322418 has 8 divisors (see below), whose sum is σ = 56644848. Its totient is φ = 9440804.

The previous prime is 28322389. The next prime is 28322429. The reversal of 28322418 is 81422382.

It is a sphenic number, since it is the product of 3 distinct primes.

28322418 is an admirable number.

It is a super-2 number, since 2×28322418² = 1604318722733448, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2360196 + ... + 2360207.

It is an arithmetic number, because the mean of its divisors is an integer number (7080606).

Almost surely, 2^28322418 is an apocalyptic number.

28322418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28322418 is a wasteful number, since it uses less digits than its factorization.

28322418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4720408.

The product of its digits is 6144, while the sum is 30.

The square root of 28322418 is about 5321.8810584229. The cubic root of 28322418 is about 304.8199887346.

The spelling of 28322418 in words is "twenty-eight million, three hundred twenty-two thousand, four hundred eighteen".